公开(公告)号：US20240336543A1

公开(公告)日：2024-10-10

申请号：US18580296

申请日：2022-03-23

Applicant: CHIYODA CORPORATION

Inventor： Osamu Hirohata ,  Yuria Watanabe

IPC: C07C1/12 ,  C07C1/04 ,  C07C7/12 ,  C07C7/144

CPC classification number: C07C1/12 ,  C07C1/0485 ,  C07C7/12 ,  C07C7/144 ,  C07C2523/06 ,  C07C2523/26 ,  C07C2523/72 ,  C07C2529/40

Abstract: An object is to reduce an overall cost including the construction cost of a plant and its raw material and energy costs, and also reduce carbon dioxide emissions. An aromatic compound manufacturing method is characterized in that the method comprises: a step A of manufacturing an aromatic compound mixture from a raw material mixture gas containing carbon dioxide or carbon monoxide or both of these and hydrogen; a step B of manufacturing an aromatic compound mixture by a cracked petroleum-derived BTX manufacturing process, a reformate-derived BTX manufacturing process, and a synthetic BTX manufacturing process using naphtha as a raw material; a step C of combining the aromatic compound mixture manufactured in the step A and the aromatic compound mixture manufactured in the step B; and a step D of separating a desired aromatic compound from the aromatic compound mixture combined in the step C and purifying the desired aromatic compound.

公开(公告)号：US20240217893A1

公开(公告)日：2024-07-04

申请号：US18556902

申请日：2022-03-23

Applicant: CHIYODA CORPORATION

Inventor： Osamu Hirohata ,  Tadashi Ito ,  Taichiro Masagaki ,  Yuria Watanabe

IPC: C07C1/12 ,  C07C1/04 ,  C07C7/00

CPC classification number: C07C1/12 ,  C07C1/04 ,  C07C7/005

Abstract: The method is for producing para-xylene using, as a main raw material, a mixed gas of carbon dioxide or carbon monoxide or both thereof and hydrogen. The method including: a reaction step of bringing a raw material mixed gas including the mixed gas into contact with a reaction catalyst under high temperature and high pressure to cause a reaction, to thereby obtain a product gas mixture containing para-xylene; a separation step of cooling the product gas mixture obtained in the reaction step to condense a high boiling point component, to thereby separate the product gas mixture into a water phase containing a water-soluble component, an oil phase containing a xylene mixture, and a gas phase containing an unreacted gas; and a circulation step of mixing at least part of the gas phase having been separated in the separation step into the raw material mixed gas.